/*
 * CSB Admin Noclip
 * Copyright (C) 2026 counter-strike-boost.com
 *
 * Toggles MOVETYPE_NOCLIP for admins with amx_noclip (bind a key to it too).
 * A HUD marker shows while noclip is on, and it is disabled automatically on
 * death and at the start of every round so it cannot be carried into play.
 * A cvar blocks weapon fire while noclipping so it cannot be abused mid-fight.
 *
 * Inspired by the AMX Mod X admin commands. Independent GPL re-implementation.
 *
 * This program is free software: you can redistribute it and/or modify it under
 * the terms of the GNU General Public License as published by the Free Software
 * Foundation, either version 3 of the License, or (at your option) any later
 * version. It is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See <https://www.gnu.org/licenses/> for details.
 */

#include <amxmodx>
#include <amxmisc>
#include <fakemeta>

new const PLUGIN[] = "CSB Admin Noclip"
new const VERSION[] = "1.0.0"
new const AUTHOR[]  = "counter-strike-boost.com"

#define MOVETYPE_WALK   3
#define MOVETYPE_NOCLIP 8

#define IN_ATTACK   (1<<0)
#define IN_ATTACK2  (1<<11)

#define ACCESS_FLAG ADMIN_CVAR

new g_pEnabled, g_pBlockFire
new bool:g_bNoclip[33]
new g_iSync

public plugin_init()
{
    register_plugin(PLUGIN, VERSION, AUTHOR)

    g_pEnabled   = register_cvar("csb_noclip_enabled", "1")
    g_pBlockFire = register_cvar("csb_noclip_blockfire", "1")

    register_concmd("amx_noclip", "cmdNoclip", ACCESS_FLAG, "- toggle noclip on yourself")

    register_event("DeathMsg", "eventDeath", "a", "1>0")
    register_event("HLTV", "eventNewRound", "a", "1=0", "2=0")

    register_forward(FM_CmdStart, "fwCmdStart")

    g_iSync = CreateHudSyncObj()
    set_task(0.5, "taskHud", 0, _, _, "b")
}

public client_putinserver(id)
{
    g_bNoclip[id] = false
}

public cmdNoclip(id, level, cid)
{
    if (!cmd_access(id, level, cid, 1))
        return PLUGIN_HANDLED

    if (!get_pcvar_num(g_pEnabled))
    {
        console_print(id, "[CSB] Noclip is disabled.")
        return PLUGIN_HANDLED
    }

    if (!is_user_alive(id))
    {
        client_print(id, print_chat, "[CSB] You must be alive to noclip.")
        return PLUGIN_HANDLED
    }

    setNoclip(id, !g_bNoclip[id])
    client_print(id, print_chat, "[CSB] Noclip %s.", g_bNoclip[id] ? "ON" : "OFF")
    return PLUGIN_HANDLED
}

setNoclip(id, bool:on)
{
    g_bNoclip[id] = on
    set_pev(id, pev_movetype, on ? MOVETYPE_NOCLIP : MOVETYPE_WALK)
}

public eventDeath()
{
    new victim = read_data(2)

    if (victim >= 1 && victim <= 32 && g_bNoclip[victim])
        g_bNoclip[victim] = false
}

public eventNewRound()
{
    for (new id = 1; id <= 32; id++)
    {
        if (g_bNoclip[id])
        {
            g_bNoclip[id] = false

            if (is_user_alive(id))
                set_pev(id, pev_movetype, MOVETYPE_WALK)
        }
    }
}

public fwCmdStart(id, uc_handle, seed)
{
    if (!g_bNoclip[id] || !get_pcvar_num(g_pBlockFire))
        return FMRES_IGNORED

    new buttons = get_uc(uc_handle, UC_Buttons)

    if (buttons & (IN_ATTACK | IN_ATTACK2))
    {
        buttons &= ~(IN_ATTACK | IN_ATTACK2)
        set_uc(uc_handle, UC_Buttons, buttons)
    }

    return FMRES_HANDLED
}

public taskHud()
{
    new players[32], num
    get_players(players, num, "ch")

    set_hudmessage(0, 255, 255, 0.75, 0.85, 0, 0.0, 0.6, 0.0, 0.0, -1)

    for (new i = 0; i < num; i++)
    {
        new id = players[i]

        if (g_bNoclip[id])
            ShowSyncHudMsg(id, g_iSync, "[ NOCLIP ]")
    }
}